/// <summary>
/// Gets or Adds a V3InlineSourceMap into the current bundle context
/// </summary>
/// <param name="bundleContext"></param>
/// <param name="sourceMapType"></param>
/// <returns></returns>
public static V3DeferredSourceMap GetSourceMapFromContext(this BundleContext bundleContext, SourceMapType sourceMapType)
{
var key = typeof(V3DeferredSourceMap).Name;
object ctx;
if (bundleContext.Items.TryGetValue(key, out ctx))
{
return((V3DeferredSourceMap)ctx);
}
//not in the context so add it
var sb = new StringBuilder();
var sourceMapWriter = new Utf8StringWriter(sb);
var inlineSourceMap = new V3DeferredSourceMap((V3SourceMap)SourceMapFactory.Create(sourceMapWriter, V3SourceMap.ImplementationName), sb, sourceMapType);
bundleContext.Items[key] = inlineSourceMap;
return(inlineSourceMap);
}
private void ProcessJavaScript(IList <InputGroup> inputGroups, SwitchParser switchParser, string outputPath, SymbolMap symbolMap, Encoding outputEncoding)
{
var settings = switchParser.JSSettings;
TextWriter mapWriter = null;
ISourceMap sourceMap = null;
try
{
// if we want a symbols map, we need to set it up now
if (symbolMap != null && !settings.PreprocessOnly)
{
// if we specified the path, use it. Otherwise just use the output path with
// ".map" appended to the end. Eg: output.js => output.js.map
var symbolMapPath = symbolMap.Path.IsNullOrWhiteSpace()
? outputPath + ".map"
: symbolMap.Path;
// create the map writer and the source map implementation.
// look at the Name attribute and implement the proper one.
// the encoding needs to be UTF-8 WITHOUT a BOM or it won't work.
if (!FileWriteOperation(symbolMapPath, switchParser.Clobber, () =>
{
mapWriter = new StreamWriter(symbolMapPath, false, new UTF8Encoding(false));
sourceMap = SourceMapFactory.Create(mapWriter, symbolMap.Name);
if (sourceMap != null)
{
// if we get here, the symbol map now owns the stream and we can null it out so
// we don't double-close it
mapWriter = null;
settings.SymbolsMap = sourceMap;
// copy some property values
sourceMap.SourceRoot = symbolMap.SourceRoot.IfNullOrWhiteSpace(null);
sourceMap.SafeHeader = symbolMap.SafeHeader.GetValueOrDefault(false);
// start the package
sourceMap.StartPackage(outputPath, symbolMapPath);
}
return(true);
}))
{
// could not write file
Log.LogError(Strings.CouldNotWriteOutputFile, symbolMapPath);
}
}
// save the original term settings. We'll make sure to set this back again
// for the last item in the group, but we'll make sure it's TRUE for all the others.
var originalTermSetting = settings.TermSemicolons;
var currentSourceOrigin = SourceOrigin.Project;
var parser = new JSParser();
parser.CompilerError += (sender, ea) =>
{
// if the input group isn't project, then we only want to report sev-0 errors.
// regardless, don't show any errors that have a severity lower (greater numeric value)
// than the warning level specified.
if ((currentSourceOrigin == SourceOrigin.Project || ea.Error.Severity == 0) &&
ea.Error.Severity <= switchParser.WarningLevel)
{
LogContextError(ea.Error);
}
};
var outputBuilder = new StringBuilder(8192);
using (var writer = new StringWriter(outputBuilder, CultureInfo.InvariantCulture))
{
for (var inputGroupIndex = 0; inputGroupIndex < inputGroups.Count; ++inputGroupIndex)
{
var inputGroup = inputGroups[inputGroupIndex];
currentSourceOrigin = inputGroup.Origin;
// for all but the last item, we want the term-semicolons setting to be true.
// but for the last entry, set it back to its original value
settings.TermSemicolons = inputGroupIndex < inputGroups.Count - 1 ? true : originalTermSetting;
if (settings.PreprocessOnly)
{
parser.EchoWriter = writer;
if (inputGroupIndex > 0)
{
// not the first group, so output the appropriate newline
// sequence before we output the group.
writer.Write(settings.LineTerminator);
}
}
else
{
// not preprocess-only, so make sure the echo writer is null
parser.EchoWriter = null;
}
// parse the input
var block = parser.Parse(inputGroup.Source, settings);
if (block != null && !settings.PreprocessOnly)
{
if (inputGroupIndex > 0)
{
// not the first group, so output the appropriate newline
// sequence before we output the group.
writer.Write(settings.LineTerminator);
}
// minify the AST to the output
if (settings.Format == JavaScriptFormat.JSON)
{
if (!JSONOutputVisitor.Apply(writer, block, settings))
{
Log.LogError(Strings.InvalidJSONOutput);
}
}
else
{
OutputVisitor.Apply(writer, block, settings);
}
}
}
}
// write output
if (!Log.HasLoggedErrors)
{
if (!FileWriteOperation(outputPath, switchParser.Clobber, () =>
{
using (var writer = new StreamWriter(outputPath, false, outputEncoding))
{
// write the combined minified code
writer.Write(outputBuilder.ToString());
if (!settings.PreprocessOnly)
{
// give the map (if any) a chance to add something
settings.SymbolsMap.IfNotNull(m => m.EndFile(
writer,
settings.LineTerminator));
}
}
return(true);
}))
{
// could not write file
Log.LogError(Strings.CouldNotWriteOutputFile, outputPath);
}
}
else
{
Log.LogWarning(Strings.DidNotMinify, outputPath, Strings.ThereWereErrors);
if (File.Exists(outputPath))
{
File.Delete(outputPath);
}
}
}
finally
{
if (sourceMap != null)
{
mapWriter = null;
settings.SymbolsMap = null;
sourceMap.EndPackage();
sourceMap.Dispose();
}
if (mapWriter != null)
{
mapWriter.Close();
}
}
}
public void SetUp()
{
_factory = new SourceMapFactory();
}
